标签：set Java Long 获取 当前 timeZone calendar Calendar GMT
package com.lingyejun.authenticator;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Calendar;
import java.util.TimeZone;
public class CalendarAdjust {
/**
* 获取指定某一天的开始时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getDailyStartTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTimeInMillis();
}
/**
* 获取指定某一天的结束时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getDailyEndTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MILLISECOND, 999);
return calendar.getTimeInMillis();
}
/**
* 获取当月开始时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getMonthStartTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();// 获取当前日期
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
calendar.add(Calendar.YEAR, 0);
calendar.add(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTimeInMillis();
}
/**
* 获取当月的结束时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getMonthEndTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();// 获取当前日期
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
calendar.add(Calendar.YEAR, 0);
calendar.add(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));// 获取当前月最后一天
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MILLISECOND, 999);
return calendar.getTimeInMillis();
}
/**
* 获取当年的开始时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getYearStartTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();// 获取当前日期
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
calendar.add(Calendar.YEAR, 0);
calendar.add(Calendar.DATE, 0);
calendar.add(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_YEAR, 1);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTimeInMillis();
}
/**
* 获取当年的最后时间戳
*
* @param timeStamp 毫秒级时间戳
* @param timeZone 如 GMT+8:00
* @return
*/
public static Long getYearEndTime(Long timeStamp, String timeZone) {
Calendar calendar = Calendar.getInstance();// 获取当前日期
calendar.setTimeZone(TimeZone.getTimeZone(timeZone));
calendar.setTimeInMillis(timeStamp);
int year = calendar.get(Calendar.YEAR);
calendar.clear();
calendar.set(Calendar.YEAR, year);
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
calendar.set(Calendar.MILLISECOND, 999);
calendar.roll(Calendar.DAY_OF_YEAR, -1);
return calendar.getTimeInMillis();
}
/**
* 时间戳转字符串
*
* @param timestamp 毫秒级时间戳
* @param zoneId 如 GMT+8或UTC+08:00
* @return
*/
public static String timestampToStr(long timestamp, String zoneId) {
ZoneId timezone = ZoneId.of(zoneId);
LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(timestamp), timezone);
return localDateTime.toString();
}
public static void main(String[] args) {
Long currentTime = System.currentTimeMillis();
System.out.println("Current Time : " + currentTime + " = " + timestampToStr(currentTime, "GMT+8"));
Long dailyStart = getDailyStartTime(currentTime, "GMT+8:00");
Long dailyEnd = getDailyEndTime(currentTime, "GMT+8:00");
Long monthStart = getMonthStartTime(currentTime, "GMT+8:00");
Long monthEnd = getMonthEndTime(currentTime, "GMT+8:00");
Long yearStart = getYearStartTime(currentTime, "GMT+8:00");
Long yearEnd = getYearEndTime(currentTime, "GMT+8:00");
System.out.println("Daily Start : " + dailyStart + " = " + timestampToStr(dailyStart, "GMT+8") + " Daily End : " + dailyEnd + " = " + timestampToStr(dailyEnd, "GMT+8"));
System.out.println("Month Start : " + monthStart + " = " + timestampToStr(monthStart, "GMT+8") + " Month End : " + monthEnd + " = " + timestampToStr(monthEnd, "GMT+8"));
System.out.println("Year Start : " + yearStart + " = " + timestampToStr(yearStart, "GMT+8") + " Year End : " + yearEnd + " = " + timestampToStr(yearEnd, "GMT+8"));
}
}
标签：set,Java,Long,获取,当前,timeZone,calendar,Calendar,GMT 来源： https://www.cnblogs.com/liujian1225/p/15774876.html
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